Family Dolichopsyllidae Baker 31 



Male. Preantennal region of the head with two rows of 

 bristles and a series of small setae along the anterior margin 

 of the antennal groove. Upper row consisting of six bristles of 

 which the one closest to the antenna is small and weak while 

 the other five are longer and more robust. Lower row with 

 three long stout bristles. Eye large, heavily pigmented, and 

 prominent. Labial palpus not reaching to the apex of the fore 

 coxa. Postantennal region of the head with three rows of 

 bristles, the first consisting of five stout bristles, the second of 

 six, and the third of seven which alternate with small setae 

 (Plate VII, fig. 28) . Pro- and mesonotum each armed with two 

 rows of bristles. Metanotum armed with three rows of bristles. 

 Each abdominal tergite with two rows of bristles. Tibia and 

 tarsus of the hind legs richly supplied with stout bristles. 

 Modified segments: Clasper heavy, roughly quadrangular, the 

 dorsal margin armed with a number of heavily pigmented 

 bristles of various sizes. Movable finger curved, with a number 

 of small setae on the margins. Manubrium finger-like, much 

 shorter than the penis, blunt terminally. Penis broad and heavy, 

 terminating bluntly; the spring short, not completing a single 

 turn. Posterior arm of sternite IX with numerous bristles 

 apically. For further details concerning the structure of the 

 male genitalia, see Plate VII, fig. 32. 



Female. General structure and chaetotaxy essentially as in 

 the male, except that the labial palpus extends beyond the fore 

 coxa. Posterior margin of sternite VII rounded, without a sinus. 

 Head of the receptaculum seminis slightly longer than broad; 

 tail longer than the head. For further details concerning the 

 structure of the female genitalia, see Plate VII, fig. 33. 



Records. FLORIDA — Osceola County, January 5, 1937, on 

 "opossum," two males (B. V. Travis) ; Fort Lauderdale, Feb- 

 ruary 18, 1919, on "Oryzomys palustris (Harlan) ," female (A 

 Wetmore) ; Tallahassee, January 21, 1937, on a cotton rat," two 

 males, two females. GEORGIA — Thomasville, July- August, 

 1934, on Sigmodon hispidus hispidus Say and Ord, numerous 

 specimens; Grady County, August 16, 1934, on "cotton rat," 

 two females; Newton County, July 8, 1936, on "D'delphis vir- 

 giniana," female (E. V. Komarek) . LOUISIANA— Jeanerette, 

 February 2, 1929, on "opossum" (Dikeman) . 



Eastern hosts. Opossum ("Didelphis virginiana'') , Rice-rat 

 ("Oryzomys palustris (Harlan) ") , Cotton-rat (Sigmodon his- 

 pidus hispidus Say and Ord) , "Rats." 



Eastern localities. Florida, Georgia, Louisiana. 



